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 | |
|---|---|---|---|---|---|---|
4326
PUT
OneSpan
OSPN
$585M
| $275K | ﹤0.01% |
21,500
+9,100
| +73% | +$109K |
|
|
SBDS
4327
PUT
DELISTED
Solo Brands Inc
SBDS
| $275K | ﹤0.01% |
3,023
-135
| -4% | -$10.6K |
|
4328
PUT
NextNav
NN
$1.75B
| $274K | ﹤0.01% |
33,800
-6,500
| -16% | -$51.3K |
|
4329
CALL
Procept Biorobotics
PRCT
$1.03B
| $274K | ﹤0.01% |
4,500
-17,100
| -79% | -$1.02M |
|
4330
PUT
Qfin Holdings
QFIN
$1.69B
| $274K | ﹤0.01% |
13,900
-23,600
| -63% | -$463K |
|
4331
Universal Health Services
UHS
$10.2B
| $274K | ﹤0.01% |
1,483
+865
| +140% | +$153K |
|
4332
CALL
Nkarta
NKTX
$150M
| $273K | ﹤0.01% |
46,200
-35,500
| -43% | -$251K |
|
4333
CALL
FirstCash
FCFS
$8.77B
| $272K | ﹤0.01% |
2,600
-5,300
| -67% | -$627K |
|
4334
Legend Biotech
LEGN
$3.65B
| $272K | ﹤0.01% |
+6,151
| New | +$284K |
|
4335
CALL
Rigel Pharmaceuticals
RIGL
$715M
| $272K | ﹤0.01% |
33,100
+30,700
| +1,279% | +$321K |
|
4336
PUT
Applied Industrial Technologies
AIT
$12.4B
| $271K | ﹤0.01% |
1,400
| – | – |
|
4337
PUT
Allegion
ALLE
$13.4B
| $271K | ﹤0.01% |
2,300
-9,900
| -81% | -$1.22M |
|
|
CHX
4338
DELISTED
ChampionX
CHX
| $271K | ﹤0.01% |
+8,172
| New | +$279K |
|
4339
CALL
Suburban Propane Partners
SPH
$1.23B
| $271K | ﹤0.01% |
14,300
+4,100
| +40% | +$80.7K |
|
|
VSTO
4340
PUT
DELISTED
Vista Outdoor Inc.
VSTO
| $271K | ﹤0.01% |
7,200
-13,400
| -65% | -$463K |
|
4341
PUT
Evercore
EVR
$11.9B
| $270K | ﹤0.01% |
1,300
-4,300
| -77% | -$837K |
|
4342
PUT
National Fuel Gas
NFG
$7.76B
| $270K | ﹤0.01% |
5,000
+2,300
| +85% | +$126K |
|
|
PMT
4343
PUT
PennyMac Mortgage Investment
PMT
$851M
| $270K | ﹤0.01% |
19,700
-8,800
| -31% | -$123K |
|
4344
CALL
Radian Group
RDN
$5.3B
| $270K | ﹤0.01% |
8,700
+1,700
| +24% | +$52.5K |
|
|
MTTR
4345
PUT
DELISTED
Matterport, Inc. Class A Common Stock
MTTR
| $270K | ﹤0.01% |
60,600
-1,200
| -2% | -$4.55K |
|
4346
PUT
Kosmos Energy
KOS
$1.45B
| $269K | ﹤0.01% |
48,600
+40,300
| +486% | +$235K |
|
|
MREO
4347
CALL
Mereo BioPharma
MREO
$50.3M
| $269K | ﹤0.01% |
74,800
+19,700
| +36% | +$63.8K |
|
|
ATSG
4348
PUT
DELISTED
Air Transport Services Group
ATSG
| $269K | ﹤0.01% |
19,400
-12,100
| -38% | -$160K |
|
4349
Reinsurance Group of America
RGA
$15.7B
| $268K | ﹤0.01% |
+1,309
| New | +$261K |
|
4350
PUT
Werner Enterprises
WERN
$2.2B
| $268K | ﹤0.01% |
7,500
+5,600
| +295% | +$205K |
|
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.