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ATW SPAC MANAGEMENT LLC — 13F Holdings & Portfolio

CIK 1878495 · latest 13F-HR filed 2025-11-12

Backtest portfolio

ATW SPAC MANAGEMENT LLC manages $79.2M in 13F-reported U.S. long-equity assets across 152 reported positions as of its 2025-09-30 13F-HR filing. Its largest disclosed positions are AAM (8.62%), HSPTU (7.52%), DMAA (6.48%). Quarter over quarter (versus its 2025-06-30 filing) the fund opened 54 new positions and exited 26; 48 existing positions rose in reported value and 34 fell.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

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AUM
$79.2M

Long-equity book

Holdings
152

Distinct positions

Period
2025-09-30

Filed 2025-11-12

Q/Q Activity
+54 / −26 / ↑48 / ↓34

vs 2025-06-30

Portfolio charts

Latest quarter's book, what changed, and how the portfolio has evolved across filings.

Portfolio map

Q3 25
AAM8.7% · -4%HSPTU7.5% · 0%DMAA6.5% · -12%ASPC5.1% · 0%RDAC4.7% · 0%CAPN4.1% · 0%FVN3.8% · 0%CHAR3.6% · -9%GSRFU2.6% · newOTGAU2.2% · newEMISR2.2% · newBSAAU2.1% · 0%TRAILBLAZER MERGER2.0% · 0%SSEAU1.9% · newMKLYU1.9% · newCCII1.8% · newAPACU1.7% · newBKHA1.7% · -60%APADR1.6% · newBCAR1.5% · newBLUW1.4% · newCOPL1.3% · newGTERU1.3% · newSPEGU1.3% · newQUMSU1.3% · newAEXA1.3% · newCHECU1.3% · newLWAC1.1% · newPACH1.0% · newBACCU1.0% · 0%AACB1.0% · -40%CEPF1.0% · newBCSS.U1.0% · newNMP0.9% · newTVA0.9% · newBRRWW0.9% · 0%OBA0.8% · newLATAU0.8% · newBDCIU0.7% · newINAC0.7% · newSVACU0.6% · newHVMCU0.6% · newMBVIU0.6% · newWTG0.6% · newCRAQ0.6% · -39%XRPN0.6% · -65%RDAG0.6% · -40%KCHV0.6% · newPAII.U0.5% · newEVAC0.5% · newKFII0.5% · -40%CCAQ0.4% · 0%HCMAU0.3% · newKOYNU0.3% · newAXIN0.3% · newMCGA0.3% · newCAEP0.2% · -67%UCFIW0.2% · -38%INFQ.WS0.2% · -60%ATMCW0.2% · 0%

Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.

Sector mix

% of 13F value

Sectors from each company's SIC code; funds and ETFs grouped separately.

Biggest buys and sells

Q2 25 → Q3 25

Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.

13F assets and positions

2 quarters

Total reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.

Top positions over time

reported value

The eight largest current positions, valued at each quarter end.

Concentration

top 10 = 48.8%

Cumulative share of the portfolio held in the largest N positions.

Firm Profile & Key People

As of the firm’s regulatory filing dated Apr 24, 2026.

Assets Under Management
$85.4M
Discretionary
$85.4M
Employees
7
Accounts
2
Address
1 PENNSYLVANIA PLAZA
SUITE 4810
NEW YORK, NY 10119
Phone
(646) 975-5548
Name Title / Status Ownership Type
PROPPER, KERRY, SCOT ControlMANAGING MEMBER
since Jan 2022
50–75%Individual
Ruiz-Gimenez, Antonio ControlMANAGING MEMBER
since Mar 2016
25–50%Individual
FLORIO, GREGORY, LEECHIEF COMPLIANCE OFFICER
since Apr 2026
Less than 5%Individual
Ownership & leadership changes · 4 filings with changes since Oct 19, 2016

From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.

Apr 24, 2026 filing
  • No longer listedNourafchan, Chaya · CHIEF COMPLIANCE OFFICER · Less than 5% · control person · listed since May 2021
  • AddedFLORIO, GREGORY, LEE · CHIEF COMPLIANCE OFFICER · Less than 5%
Mar 29, 2024 filing
  • ChangedNourafchan, Chaya · now a control person
Jan 6, 2022 filing
  • AddedPROPPER, KERRY, SCOT · MANAGING MEMBER · 50–75% · control person
  • ChangedRuiz-Gimenez, Antonio · ownership 75% or more → 25–50%
May 26, 2021 filing
  • AddedNourafchan, Chaya · CHIEF COMPLIANCE OFFICER · Less than 5%
Oct 19, 2016 filing (earliest on record)
  • ListedRuiz-Gimenez, Antonio · MANAGING MEMBER · 75% or more · control person

Quarter-over-quarter changes

Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.

ATW SPAC MANAGEMENT LLC Holdings (2025-09-30)

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

# Issuer Symbol CUSIP Value Weight Shares Type
1 AA MISSION ACQUISITION CORP AAM G1000R101 $6.8M 8.62% 649,098 SH
2 HORIZON SPACE ACQUISITION II HSPTU G4627B103 $6.0M 7.52% 574,990 SH
3 DRUGS MADE IN AMER ACQUTN CO DMAA G2847J104 $5.1M 6.48% 500,000 SH
4 A SPAC III ACQUISITION CORP ASPC G0544A103 $4.0M 5.08% 389,100 SH
5 RISING DRAGON ACQUISITION CO RDAC G7576K107 $3.7M 4.70% 358,000 SH
6 CAYSON ACQUISITION CORP CAPN G1993W109 $3.2M 4.05% 306,703 SH
7 FUTURE VISION II ACQUISITION FVN G37068106 $3.0M 3.82% 289,614 SH
8 CHARLTON ARIA ACQUISITION CO CHAR G9877L107 $2.9M 3.62% 276,607 SH
9 GSR IV ACQUISITION CORP GSRFU G4R12K123 $2.0M 2.56% 200,000 SH
10 OTG ACQUISITION CORP. I OTGAU G6791A126 $1.8M 2.22% 175,000 SH
11 EMMIS ACQUISITION CORP. EMISR G3037D121 $1.7M 2.21% 175,000 SH
12 BEST SPAC I ACQUISITION CORP BSAAU G1069P137 $1.7M 2.08% 162,500 SH
13 TRAILBLAZER MERGER CORP I — 89278D109 $1.6M 1.97% 133,434 SH
14 STARRY SEA ACQUISITION CORP SSEAU G8559L104 $1.5M 1.92% 150,000 SH
15 MCKINLEY ACQUISITION CORP MKLYU G6005T127 $1.5M 1.89% 150,000 SH
16 COHEN CIRCLE ACQUISIT CORP I CCII G2254C121 $1.4M 1.79% 139,420 SH
17 STONEBRIDGE ACQUISITION II C APACU G85096124 $1.4M 1.73% 137,500 SH
18 BLACK HAWK ACQUISITION CORP BKHA G1148A101 $1.3M 1.68% 119,999 SH
19 A PARADISE ACQUISITION CORP APADR G04819127 $1.2M 1.57% 125,000 SH
20 D. BORAL ARC ACQ I CORP. BCAR G2616F101 $1.2M 1.54% 122,588 SH
21 BLUE WTR ACQUISITION CORP. I BLUW G1368E106 $1.1M 1.41% 111,775 SH
22 COPLEY ACQUISITION CORP COPL G24243100 $1.0M 1.31% 102,500 SH
23 GLOBA TERRA ACQUISITION COR GTERU G3933N108 $1.0M 1.28% 100,000 SH
24 SILVER PEGASUS ACQUISITION C SPEGU G8192J128 $1.0M 1.28% 100,000 SH
25 QUANTUMSPHERE ACQUISITION CO QUMSU G7387B122 $1.0M 1.28% 100,000 SH
26 AMERICAN EXCEPTIONALISM ACQU AEXA G0273J101 $1.0M 1.28% 92,500 SH
27 CHENGHE ACQUISITION III CO CHECU G2086N113 $998.0K 1.26% 100,000 SH
28 LIGHTWAVE ACQUISITION CORP LWAC G5490M100 $865.6K 1.09% 87,000 SH
29 PIONEER ACQUISITION I CORP PACH G7117W107 $830.6K 1.05% 83,391 SH
30 BLUE ACQUISITION CORP. BACCU G1331A124 $819.8K 1.03% 81,250 SH
31 ARTIUS II ACQUISITION INC AACB G0509J115 $766.7K 0.97% 75,316 SH
32 CANTOR EQUITY PARTNERS IV IN CEPF G1828E100 $763.9K 0.96% 75,000 SH
33 BAIN CAP GSS INVT CORP BCSS.U G0R78B122 $756.8K 0.96% 75,000 SH
34 NMP ACQUISITION CORP NMP G6375X104 $744.8K 0.94% 75,000 SH
35 TEXAS VENTURES ACQUISITION I TVA G8772L105 $696.1K 0.88% 65,000 SH
36 COLUMBUS CIRCLE CAP CORP. I BRRWW G2296A109 $632.9K 0.80% 62,544 SH
37 OXLEY BRIDGE ACQ LTD OBA G6858G107 $631.3K 0.80% 63,390 SH
38 GALATA ACQUISITION CORP II LATAU G3R25N124 $623.8K 0.79% 62,500 SH
39 BTC DEV CORP BDCIU G0701G125 $555.4K 0.70% 54,988 SH
40 INDIGO ACQUISITION CORP INAC G4791J106 $523.4K 0.66% 52,500 SH
41 SPRING VY ACQUISITION CORP I SVACU G8377R127 $514.0K 0.65% 50,000 SH
42 HIGHVIEW MERGER CORP HVMCU G4569C127 $506.0K 0.64% 50,000 SH
43 M3-BRIGADE ACQUISITION VI CO MBVIU G63221124 $506.0K 0.64% 50,000 SH
44 WINTERGREEN ACQUISITION CORP WTG G9717M109 $503.0K 0.63% 50,000 SH
45 CAL REDWOOD ACQUISITION CORP CRAQ G17564108 $500.0K 0.63% 50,000 SH
46 ARMADA ACQUISITION CORP II XRPN G0R38G104 $495.6K 0.63% 47,500 SH
47 REPUBLIC DIGITAL ACQUISITION RDAG G7515A103 $492.1K 0.62% 48,200 SH
48 KOCHAV DEFENSE ACQUI CO KCHV G5304D106 $471.4K 0.59% 47,000 SH
49 PYROPHYTE ACQUISITION CORP. PAII.U G7309T128 $405.2K 0.51% 40,000 SH
50 EQV VENTURES AC CORP. II EVAC G3106Q102 $398.0K 0.50% 40,000 SH
Filing History
Period Filed AUM Holdings Accession
2025-09-30 2025-11-12 $79.2M 152 0001878495-25-000023
2025-06-30 2025-08-12 $65.3M 124 0001878495-25-000017