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 | |
|---|---|---|---|---|---|---|
6926
ProShares UltraShort FTSE China 50 of ProShares Trust
FXP
$5.76M
| $19K | ﹤0.01% |
+313
| New | +$19.5K |
|
6927
CALL
Graham Corp
GHM
$1.03B
| $19K | ﹤0.01% |
+700
| New | +$20.1K |
|
6928
ProShares UltraShort Gold
GLL
$127M
| $19K | ﹤0.01% |
225
+100
| +80% | +$8.51K |
|
|
XRN
6929
CALL
Chiron Real Estate Inc
XRN
$535M
| $19K | ﹤0.01% |
440
+60
| +16% | +$2.61K |
|
6930
Fusion Fuel Green
HTOO
$8.51M
| $19K | ﹤0.01% |
638
-332
| -34% | -$14.2K |
|
|
HUYA
6931
Huya Inc
HUYA
$558M
| $19K | ﹤0.01% |
+4,980
| New | +$23.4K |
|
6932
PUT
Kenon Holdings
KEN
$3.33B
| $19K | ﹤0.01% |
800
+600
| +300% | +$14.2K |
|
6933
CALL
Lloyds Banking Group
LYG
$85.2B
| $19K | ﹤0.01% |
7,200
-35,700
| -83% | -$95.8K |
|
6934
CALL
Movado Group
MOV
$840M
| $19K | ﹤0.01% |
800
-6,400
| -89% | -$167K |
|
6935
CALL
Insight Enterprises
NSIT
$3.85B
| $19K | ﹤0.01% |
100
-5,200
| -98% | -$1.01M |
|
6936
PUT
Olema Pharmaceuticals
OLMA
$977M
| $19K | ﹤0.01% |
1,800
-1,800
| -50% | -$19.5K |
|
6937
CALL
Patria Investments
PAX
$1.72B
| $19K | ﹤0.01% |
1,600
+500
| +45% | +$6.59K |
|
6938
CALL
Paymentus
PAY
$4.62B
| $19K | ﹤0.01% |
1,000
-12,200
| -92% | -$239K |
|
6939
PUT
ProPetro Holding
PUMP
$1.25B
| $19K | ﹤0.01% |
2,300
-300
| -12% | -$2.67K |
|
6940
QuickLogic
QUIK
$211M
| $19K | ﹤0.01% |
1,894
-12,997
| -87% | -$164K |
|
6941
PUT
Richardson Electronics
RELL
$244M
| $19K | ﹤0.01% |
1,600
-4,000
| -71% | -$42.6K |
|
6942
Replimune Group
REPL
$454M
| $19K | ﹤0.01% |
2,193
-9,448
| -81% | -$65.8K |
|
|
REVG
6943
CALL
DELISTED
REV Group
REVG
| $19K | ﹤0.01% |
800
-1,800
| -69% | -$44.2K |
|
6944
CALL
Relmada Therapeutics
RLMD
$540M
| $19K | ﹤0.01% |
6,400
-100
| -2% | -$362 |
|
|
SAGE
6945
PUT
DELISTED
Sage Therapeutics
SAGE
| $19K | ﹤0.01% |
1,800
+1,000
| +125% | +$12.8K |
|
6946
CALL
Simmons First National
SFNC
$3.39B
| $19K | ﹤0.01% |
1,100
| – | – |
|
6947
PUT
Solid Power
SLDP
$450M
| $19K | ﹤0.01% |
11,600
+7,700
| +197% | +$13.3K |
|
6948
CALL
SelectQuote
SLQT
$122M
| $19K | ﹤0.01% |
6,900
+400
| +6% | +$963 |
|
|
6949
PUT
SelectQuote
SLQT
$122M
| $19K | ﹤0.01% |
+7,000
| New | +$16.9K |
|
|
SOL
6950
DELISTED
Emeren Group
SOL
| $19K | ﹤0.01% |
12,819
-19,546
| -60% | -$35.8K |
|
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.