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 | |
|---|---|---|---|---|---|---|
3576
CALL
iShares 0-5 Year Investment Grade Corporate Bond ETF
SLQD
$2.37B
| $546K | ﹤0.01% |
11,400
-1,000
| -8% | -$49K |
|
|
TPC
3577
CALL
Tutor Perini Cor
TPC
$4.3B
| $546K | ﹤0.01% |
25,100
+7,500
| +43% | +$138K |
|
3578
PUT
Royalty Pharma
RPRX
$26.4B
| $545K | ﹤0.01% |
20,700
-57,400
| -73% | -$1.59M |
|
|
PRFT
3579
PUT
DELISTED
Perficient Inc
PRFT
| $545K | ﹤0.01% |
7,300
+4,800
| +192% | +$307K |
|
3580
MDU Resources
MDU
$4.39B
| $544K | ﹤0.01% |
39,188
+27,159
| +226% | +$375K |
|
|
MESO
3581
CALL
Mesoblast
MESO
$1.84B
| $544K | ﹤0.01% |
79,900
-16,600
| -17% | -$113K |
|
3582
PUT
uniQure
QURE
$2.49B
| $544K | ﹤0.01% |
121,600
+5,000
| +4% | +$24.3K |
|
3583
PUT
Westrock Coffee
WEST
$791M
| $544K | ﹤0.01% |
53,200
-27,400
| -34% | -$282K |
|
3584
Teucrium Wheat Fund
WEAT
$294M
| $543K | ﹤0.01% |
20,489
+11,162
| +120% | +$322K |
|
|
DM
3585
DELISTED
Desktop Metal, Inc.
DM
| $543K | ﹤0.01% |
131,524
+103,002
| +361% | +$704K |
|
3586
CALL
Spectrum Brands
SPB
$2.07B
| $541K | ﹤0.01% |
6,300
-11,300
| -64% | -$982K |
|
3587
Digimarc Corp
DMRC
$139M
| $540K | ﹤0.01% |
17,424
+16,853
| +2,951% | +$428K |
|
3588
Kodak
KODK
$787M
| $540K | ﹤0.01% |
100,499
-11,228
| -10% | -$56.9K |
|
3589
CALL
NET Power
NPWR
$124M
| $540K | ﹤0.01% |
55,000
+54,100
| +6,011% | +$574K |
|
|
SAFE
3590
PUT
Safehold
SAFE
$1.21B
| $540K | ﹤0.01% |
28,000
-800
| -3% | -$15.4K |
|
3591
CALL
Brookfield Renewable
BEP
$9.6B
| $539K | ﹤0.01% |
21,800
+12,300
| +129% | +$306K |
|
3592
CALL
Alliant Energy
LNT
$19.4B
| $539K | ﹤0.01% |
10,600
+6,300
| +147% | +$317K |
|
3593
PUT
Bausch + Lomb
BLCO
$5.91B
| $538K | ﹤0.01% |
37,100
+8,800
| +31% | +$132K |
|
3594
PUT
Blackstone Secured Lending
BXSL
$5.37B
| $538K | ﹤0.01% |
17,600
+7,900
| +81% | +$247K |
|
3595
CALL
Utz Brands
UTZ
$1.25B
| $537K | ﹤0.01% |
32,300
-11,300
| -26% | -$203K |
|
3596
CALL
Axalta
AXTA
$7.68B
| $536K | ﹤0.01% |
15,700
+9,400
| +149% | +$321K |
|
|
TELL
3597
CALL
DELISTED
Tellurian Inc.
TELL
| $536K | ﹤0.01% |
774,600
-23,000
| -3% | -$12.7K |
|
3598
CALL
Corebridge Financial
CRBG
$14.3B
| $535K | ﹤0.01% |
18,400
-114,900
| -86% | -$3.31M |
|
3599
iShares Biotechnology ETF
IBB
$9.51B
| $535K | ﹤0.01% |
3,901
-1,271
| -25% | -$170K |
|
3600
CALL
MKS Inc
MKSI
$18.8B
| $535K | ﹤0.01% |
4,100
-5,000
| -55% | -$631K |
|
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.