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 | |
|---|---|---|---|---|---|---|
|
SHCR
5651
CALL
DELISTED
Sharecare, Inc. Class A Common Stock
SHCR
| $77K | ﹤0.01% |
+57,500
| New | +$47.2K |
|
5652
PUT
ANI Pharmaceuticals
ANIP
$1.8B
| $76K | ﹤0.01% |
1,200
-1,200
| -50% | -$77.9K |
|
|
ATXS
5653
PUT
DELISTED
Astria Therapeutics
ATXS
| $76K | ﹤0.01% |
8,400
-8,500
| -50% | -$83K |
|
5654
DMC Global
BOOM
$138M
| $76K | ﹤0.01% |
5,338
+2,174
| +69% | +$32.4K |
|
5655
Bioventus
BVS
$892M
| $76K | ﹤0.01% |
13,383
+12,105
| +947% | +$66.4K |
|
5656
CALL
Camden Property Trust
CPT
$11B
| $76K | ﹤0.01% |
700
-2,700
| -79% | -$279K |
|
5657
CALL
Consolidated Water Co
CWCO
$467M
| $76K | ﹤0.01% |
2,900
-5,200
| -64% | -$136K |
|
5658
Establishment Labs
ESTA
$2.72B
| $76K | ﹤0.01% |
1,685
-25,086
| -94% | -$1.27M |
|
5659
CALL
Hain Celestial
HAIN
$45M
| $76K | ﹤0.01% |
11,100
+7,900
| +247% | +$54.3K |
|
|
OTLY
5660
CALL
Oatly Group
OTLY
$465M
| $76K | ﹤0.01% |
4,095
-350
| -8% | -$7.44K |
|
5661
PUT
Surgery Partners
SGRY
$2.01B
| $76K | ﹤0.01% |
3,200
+1,100
| +52% | +$28.2K |
|
5662
CALL
Upbound Group
UPBD
$1.13B
| $76K | ﹤0.01% |
2,500
-11,500
| -82% | -$367K |
|
5663
Direxion Daily Utilities Bull 3X ETF
UTSL
$40M
| $76K | ﹤0.01% |
3,089
-822
| -21% | -$21.1K |
|
5664
PUT
Vicor
VICR
$9.56B
| $76K | ﹤0.01% |
2,300
-1,200
| -34% | -$41.4K |
|
|
ZUO
5665
PUT
DELISTED
Zuora, Inc.
ZUO
| $76K | ﹤0.01% |
7,700
-14,200
| -65% | -$137K |
|
|
MRNS
5666
DELISTED
Marinus Pharmaceuticals, Inc
MRNS
| $76K | ﹤0.01% |
65,041
-27,230
| -30% | -$68.1K |
|
5667
CALL
Aterian
ATER
$4.45M
| $75K | ﹤0.01% |
26,700
+400
| +2% | +$995 |
|
5668
CALL
Belden
BDC
$4.85B
| $75K | ﹤0.01% |
800
+700
| +700% | +$63.6K |
|
5669
Donaldson
DCI
$10.9B
| $75K | ﹤0.01% |
+1,059
| New | +$77.7K |
|
5670
CALL
Ispire Technology
ISPR
$83.2M
| $75K | ﹤0.01% |
9,400
-3,300
| -26% | -$21.3K |
|
5671
PUT
Lightwave Logic
LWLG
$995M
| $75K | ﹤0.01% |
25,100
+5,600
| +29% | +$20.5K |
|
5672
PUT
Rocket Pharmaceuticals
RCKT
$340M
| $75K | ﹤0.01% |
3,500
-4,400
| -56% | -$101K |
|
5673
Tilly's
TLYS
$116M
| $75K | ﹤0.01% |
+12,551
| New | +$72.7K |
|
5674
VirTra
VTSI
$34.9M
| $75K | ﹤0.01% |
9,863
-31,381
| -76% | -$361K |
|
|
YALA
5675
CALL
Yalla Group
YALA
$818M
| $75K | ﹤0.01% |
16,600
+15,600
| +1,560% | +$73.8K |
|
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.