Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$93M |
| 2 |
Citigroup
C
|
+$74.8M |
| 3 |
Pinduoduo
PDD
|
+$50.7M |
| 4 |
Intel
INTC
|
+$47.1M |
| 5 |
Broadcom
AVGO
|
+$46.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$94.5M |
| 2 |
Pfizer
PFE
|
+$66.4M |
| 3 |
Boeing
BA
|
+$61.6M |
| 4 |
PayPal
PYPL
|
+$42.2M |
| 5 |
GE Aerospace
GE
|
+$42M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.53% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.21% |
| 4 | Financials | 0.2% |
| 5 | Materials | 0.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
6626
Coastal Financial
CCB
$1.08B
| $27K | ﹤0.01% |
595
+529
| +802% | +$22.3K |
|
|
DAO
6627
CALL
Youdao
DAO
$1.89B
| $27K | ﹤0.01% |
7,000
+2,900
| +71% | +$10.9K |
|
|
DRD
6628
DRDGold
DRD
$1.75B
| $27K | ﹤0.01% |
3,147
-12,897
| -80% | -$109K |
|
|
DSL
6629
PUT
DoubleLine Income Solutions Fund
DSL
$1.22B
| $27K | ﹤0.01% |
2,200
-500
| -19% | -$6.22K |
|
6630
Embecta
EMBC
$218M
| $27K | ﹤0.01% |
2,209
+1,020
| +86% | +$12.4K |
|
|
HYPD
6631
Hyperion DeFi Inc
HYPD
$35.5M
| $27K | ﹤0.01% |
569
+253
| +80% | +$14.7K |
|
6632
Gildan
GIL
$9.49B
| $27K | ﹤0.01% |
735
-4,262
| -85% | -$154K |
|
|
LKFT
6633
CALL
Lakefront Biotherapeutics American Depositary Shares
LKFT
$1.82B
| $27K | ﹤0.01% |
1,100
| – | – |
|
6634
CALL
Gray Television
GTN
$437M
| $27K | ﹤0.01% |
5,300
-16,500
| -76% | -$96.5K |
|
|
HOUS
6635
CALL
DELISTED
Anywhere Real Estate
HOUS
| $27K | ﹤0.01% |
8,200
-14,500
| -64% | -$67.8K |
|
6636
CALL
Hyster-Yale Materials Handling
HY
$576M
| $27K | ﹤0.01% |
400
-100
| -20% | -$6.82K |
|
6637
CALL
Ingles Markets
IMKTA
$1.72B
| $27K | ﹤0.01% |
400
+200
| +100% | +$14.5K |
|
6638
CALL
Disc Medicine
IRON
$2.81B
| $27K | ﹤0.01% |
600
-5,100
| -89% | -$173K |
|
|
NXDR
6639
CALL
Nextdoor Holdings
NXDR
$885M
| $27K | ﹤0.01% |
9,800
-18,100
| -65% | -$41.9K |
|
|
KREF
6640
CALL
KKR Real Estate Finance Trust
KREF
$466M
| $27K | ﹤0.01% |
3,000
-17,600
| -85% | -$168K |
|
6641
PUT
Limoneira
LMNR
$244M
| $27K | ﹤0.01% |
1,300
+100
| +8% | +$2.01K |
|
6642
PUT
MediWound
MDWD
$184M
| $27K | ﹤0.01% |
1,800
+1,700
| +1,700% | +$28.1K |
|
6643
CALL
Manitowoc
MTW
$491M
| $27K | ﹤0.01% |
2,400
-2,500
| -51% | -$30.9K |
|
|
NVEE
6644
CALL
DELISTED
NV5 Global
NVEE
| $27K | ﹤0.01% |
+1,200
| New | +$28K |
|
6645
ONE Gas
OGS
$5.01B
| $27K | ﹤0.01% |
435
-70
| -14% | -$4.39K |
|
|
PCH
6646
CALL
DELISTED
PotlatchDeltic
PCH
| $27K | ﹤0.01% |
700
-3,400
| -83% | -$144K |
|
6647
Peapack-Gladstone Financial
PGC
$815M
| $27K | ﹤0.01% |
+1,203
| New | +$27.3K |
|
6648
Avita Medical
RCEL
$137M
| $27K | ﹤0.01% |
3,510
+3,113
| +784% | +$29.6K |
|
6649
CALL
Rockwell Medical
RMTI
$27.2M
| $27K | ﹤0.01% |
1,550
+140
| +10% | +$2.37K |
|
6650
PUT
Riverview Bancorp
RVSB
$107M
| $27K | ﹤0.01% |
+7,000
| New | +$28.7K |
|
Similar funds
Simplex Trading's Q2 2024 Portfolio in Review
As of Q2 2024, Simplex Trading held 10,213 positions worth $162B, down 6.5% from $173B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading withdrew a net $19.2B in Q2 2024, closing 1,431 positions and reducing 4,061 holdings. Its most notable exit was Boeing, an estimated $61.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.53% of assets, up from 0.38% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in Citigroup worth $77M.
- Simplex Trading's largest Q2 2024 buy was Citigroup: 1,213,247 shares worth $77M.
- Simplex Trading added most to NVIDIA in Q2 2024, an estimated $93M increase.
- Simplex Trading's biggest Q2 2024 reduction was State Street Energy Select Sector SPDR ETF, cutting an estimated $94.5M.
- Simplex Trading fully exited Boeing in Q2 2024, selling an estimated $61.6M.
- Simplex Trading's ten largest holdings make up 50% of its $162B portfolio in Q2 2024.
- Simplex Trading opened 1,358 new positions and closed 1,431 in Q2 2024.
- Simplex Trading's portfolio value fell 6.5% quarter-over-quarter to $162B.
Based on Simplex Trading's 13F filing for Q2 2024, filed 25 Jul 2024.