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 | |
|---|---|---|---|---|---|---|
|
MTLS
7426
PUT
Materialise
MTLS
$373M
| $10K | ﹤0.01% |
2,100
-5,900
| -74% | -$30.4K |
|
7427
CALL
Materion
MTRN
$5.03B
| $10K | ﹤0.01% |
+100
| New | +$11.5K |
|
|
LUXE
7428
CALL
LuxExperience B.V.
LUXE
$1.13B
| $10K | ﹤0.01% |
+2,000
| New | +$9.19K |
|
7429
National Grid
NGG
$81.6B
| $10K | ﹤0.01% |
+188
| New | +$11.3K |
|
7430
CALL
NRX Pharmaceuticals
NRXP
$155M
| $10K | ﹤0.01% |
4,100
+3,870
| +1,683% | +$13.8K |
|
7431
PUT
Orthofix Medical
OFIX
$481M
| $10K | ﹤0.01% |
800
+100
| +14% | +$1.37K |
|
7432
PUT
Oramed Pharmaceuticals
ORMP
$170M
| $10K | ﹤0.01% |
4,100
+2,700
| +193% | +$6.42K |
|
7433
CALL
Oxford Industries
OXM
$602M
| $10K | ﹤0.01% |
100
-100
| -50% | -$10.5K |
|
|
7434
PUT
Oxford Industries
OXM
$602M
| $10K | ﹤0.01% |
100
-1,300
| -93% | -$137K |
|
7435
CALL
Phibro Animal Health
PAHC
$1.43B
| $10K | ﹤0.01% |
600
| – | – |
|
7436
PUT
Pangaea Logistics
PANL
$488M
| $10K | ﹤0.01% |
1,400
-3,000
| -68% | -$22.3K |
|
7437
PUT
PJT Partners
PJT
$4.36B
| $10K | ﹤0.01% |
100
-4,900
| -98% | -$492K |
|
|
PPTA
7438
PUT
Perpetua Resources
PPTA
$2.28B
| $10K | ﹤0.01% |
2,000
+1,100
| +122% | +$6.54K |
|
7439
PUT
PROG Holdings
PRG
$1.73B
| $10K | ﹤0.01% |
300
-6,400
| -96% | -$221K |
|
|
HTT
7440
PUT
High Templar Tech Ltd
HTT
$376M
| $10K | ﹤0.01% |
5,100
+100
| +2% | +$209 |
|
7441
CALL
Rezolute
RZLT
$476M
| $10K | ﹤0.01% |
+2,400
| New | +$8.25K |
|
7442
CALL
Star Group
SGU
$415M
| $10K | ﹤0.01% |
+1,000
| New | +$10.8K |
|
|
SJT
7443
San Juan Basin Royalty Trust
SJT
$118M
| $10K | ﹤0.01% |
+2,607
| New | +$11.5K |
|
|
SLRN
7444
CALL
DELISTED
ACELYRIN
SLRN
| $10K | ﹤0.01% |
2,400
-15,100
| -86% | -$70.8K |
|
7445
PUT
SmartRent
SMRT
$186M
| $10K | ﹤0.01% |
4,300
+300
| +8% | +$736 |
|
7446
PUT
Stratasys
SSYS
$700M
| $10K | ﹤0.01% |
1,200
+1,100
| +1,100% | +$10.5K |
|
7447
CALL
Supernus Pharmaceuticals
SUPN
$2.73B
| $10K | ﹤0.01% |
400
-17,200
| -98% | -$499K |
|
7448
Cambria Shareholder Yield ETF
SYLD
$992M
| $10K | ﹤0.01% |
161
+115
| +250% | +$8.04K |
|
7449
CALL
Telesat
TSAT
$575M
| $10K | ﹤0.01% |
1,100
| – | – |
|
7450
Under Armour Class C
UA
$2.95B
| $10K | ﹤0.01% |
1,620
-5,906
| -78% | -$39.1K |
|
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.