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 | |
|---|---|---|---|---|---|---|
|
BRSP
6401
CALL
BrightSpire Capital
BRSP
$634M
| $35K | ﹤0.01% |
6,200
-5,800
| -48% | -$35.6K |
|
6402
PUT
Chefs' Warehouse
CHEF
$4.31B
| $35K | ﹤0.01% |
900
-1,200
| -57% | -$44.3K |
|
6403
CALL
Evolution Petroleum
EPM
$133M
| $35K | ﹤0.01% |
6,700
-3,600
| -35% | -$20.2K |
|
|
EVRI
6404
PUT
DELISTED
Everi Holdings
EVRI
| $35K | ﹤0.01% |
4,200
-300
| -7% | -$2.45K |
|
6405
PUT
4D Molecular Therapeutics
FDMT
$502M
| $35K | ﹤0.01% |
+1,700
| New | +$42.6K |
|
6406
Fulgent Genetics
FLGT
$558M
| $35K | ﹤0.01% |
1,800
-2,446
| -58% | -$51.1K |
|
6407
CALL
Hyliion Holdings
HYLN
$578M
| $35K | ﹤0.01% |
21,700
+13,500
| +165% | +$20.1K |
|
6408
PUT
IDEAYA Biosciences
IDYA
$3.43B
| $35K | ﹤0.01% |
1,000
-4,200
| -81% | -$166K |
|
6409
PUT
Innodata
INOD
$1.81B
| $35K | ﹤0.01% |
2,400
-2,800
| -54% | -$29.1K |
|
6410
CALL
inTEST
INTT
$143M
| $35K | ﹤0.01% |
3,600
-2,500
| -41% | -$26.7K |
|
|
LYRA
6411
DELISTED
LYRA THERAPEUTICS INC
LYRA
| $35K | ﹤0.01% |
+2,583
| New | +$292K |
|
|
MITT
6412
CALL
TPG Mortgage Investment Trust
MITT
$228M
| $35K | ﹤0.01% |
5,400
+5,200
| +2,600% | +$33.2K |
|
|
OBE
6413
PUT
Obsidian Energy
OBE
$656M
| $35K | ﹤0.01% |
4,700
+3,300
| +236% | +$25.9K |
|
6414
PUT
Ocugen
OCGN
$403M
| $35K | ﹤0.01% |
23,200
-9,100
| -28% | -$14.2K |
|
6415
CALL
Otter Tail
OTTR
$3.81B
| $35K | ﹤0.01% |
400
| – | – |
|
|
PBPB
6416
DELISTED
Potbelly
PBPB
| $35K | ﹤0.01% |
+4,366
| New | +$40.4K |
|
|
PDS
6417
PUT
Precision Drilling
PDS
$940M
| $35K | ﹤0.01% |
500
-2,000
| -80% | -$141K |
|
6418
The ONE Group
STKS
$55.9M
| $35K | ﹤0.01% |
8,340
-13,035
| -61% | -$67.7K |
|
6419
Trip.com Group
TCOM
$29B
| $35K | ﹤0.01% |
+745
| New | +$37.9K |
|
6420
CALL
Tenaya Therapeutics
TNYA
$160M
| $35K | ﹤0.01% |
11,400
-6,900
| -38% | -$28.5K |
|
6421
Vanguard Morningstar Small-Cap Growth ETF
VBK
$22.7B
| $35K | ﹤0.01% |
140
-463
| -77% | -$116K |
|
6422
PUT
Voya Financial
VOYA
$8.96B
| $35K | ﹤0.01% |
500
+100
| +25% | +$7.2K |
|
6423
PUT
Verrica Pharmaceuticals
VRCA
$89M
| $35K | ﹤0.01% |
490
-20
| -4% | -$1.54K |
|
6424
PUT
Select Water Solutions
WTTR
$2.22B
| $35K | ﹤0.01% |
+3,300
| New | +$32.6K |
|
|
CBL
6425
PUT
DELISTED
CBL& Associates Properties, Inc.
CBL
| $35K | ﹤0.01% |
1,500
+1,400
| +1,400% | +$32.7K |
|
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.