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 |
Microsoft
MSFT
|
+$114M |
| 2 |
NVIDIA
NVDA
|
+$85.9M |
| 3 |
Citigroup
C
|
+$61.5M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.5M |
| 5 |
Pfizer
PFE
|
+$41.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$467M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$71.2M |
| 3 |
Meta Platforms (Facebook)
META
|
+$47.6M |
| 4 |
Intel
INTC
|
+$41.9M |
| 5 |
TSMC
TSM
|
+$35.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.51% |
| 2 | Financials | 0.35% |
| 3 | Consumer Discretionary | 0.3% |
| 4 | Healthcare | 0.25% |
| 5 | Industrials | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1226
PUT
HF Sinclair
DINO
$15.9B
| $4.87M | 0.01% |
90,400
+16,300
| +22% | +$806K |
|
1227
CALL
XPO
XPO
$25B
| $4.85M | 0.01% |
184,289
-190,347
| -51% | -$5.93M |
|
1228
CALL
Arthur J. Gallagher & Co
AJG
$63.7B
| $4.84M | 0.01% |
28,300
+22,800
| +415% | +$4.05M |
|
|
PPLI
1229
PUT
People Inc
PPLI
$3.1B
| $4.84M | 0.01% |
106,663
+74,847
| +235% | +$4.21M |
|
1230
CALL
Fastly Inc
FSLY
$3.17B
| $4.83M | 0.01% |
527,300
+4,500
| +0.9% | +$47.9K |
|
1231
CALL
iShares Gold Trust
IAU
$63B
| $4.83M | 0.01% |
153,100
-23,100
| -13% | -$757K |
|
1232
W.W. Grainger
GWW
$65.3B
| $4.83M | 0.01% |
9,864
+3,899
| +65% | +$2.05M |
|
|
COUP
1233
CALL
DELISTED
Coupa Software Incorporated
COUP
| $4.82M | 0.01% |
81,900
+14,400
| +21% | +$943K |
|
1234
PUT
Yeti Holdings
YETI
$3.82B
| $4.8M | 0.01% |
168,500
+2,400
| +1% | +$100K |
|
1235
CALL
Virgin Galactic
SPCE
$320M
| $4.79M | 0.01% |
50,805
-6,245
| -11% | -$802K |
|
1236
CALL
Vornado Realty Trust
VNO
$7.47B
| $4.76M | 0.01% |
205,400
-12,600
| -6% | -$351K |
|
1237
CALL
Equity Residential
EQR
$25.4B
| $4.75M | 0.01% |
70,600
+48,000
| +212% | +$3.55M |
|
|
ARCH
1238
PUT
DELISTED
Arch Resources, Inc.
ARCH
| $4.74M | 0.01% |
40,000
+3,500
| +10% | +$484K |
|
1239
PUT
Prothena Corp
PRTA
$458M
| $4.74M | 0.01% |
78,200
+76,400
| +4,244% | +$2.42M |
|
1240
iShares MSCI Canada ETF
EWC
$6.04B
| $4.73M | 0.01% |
+153,920
| New | +$5.23M |
|
1241
Li Auto
LI
$12.6B
| $4.73M | 0.01% |
205,480
+21,077
| +11% | +$657K |
|
1242
PUT
QuantumScape Corp
QS
$3B
| $4.73M | 0.01% |
562,200
-39,900
| -7% | -$428K |
|
|
NVMI
1243
PUT
Nova
NVMI
$13.9B
| $4.72M | 0.01% |
55,400
+200
| +0.4% | +$19.6K |
|
1244
CALL
Ovintiv
OVV
$17.5B
| $4.7M | 0.01% |
102,200
-8,600
| -8% | -$411K |
|
|
BNY
1245
CALL
Bank of New York Mellon
BNY
$108B
| $4.7M | 0.01% |
122,000
+75,500
| +162% | +$3.22M |
|
1246
CALL
NRG Energy
NRG
$29.8B
| $4.7M | 0.01% |
122,700
-900
| -0.7% | -$35.9K |
|
1247
PUT
Innovative Industrial Properties
IIPR
$1.78B
| $4.69M | 0.01% |
53,000
+34,400
| +185% | +$3.34M |
|
1248
CALL
KB Home
KBH
$3.48B
| $4.69M | 0.01% |
180,800
+33,400
| +23% | +$1M |
|
|
RETA
1249
PUT
DELISTED
Reata Pharmaceuticals, Inc. Class A Common Stock
RETA
| $4.68M | 0.01% |
186,400
+156,400
| +521% | +$4.33M |
|
1250
State Street Materials Select Sector SPDR ETF
XLB
$8.51B
| $4.67M | 0.01% |
137,346
+82,040
| +148% | +$3.08M |
|
Similar funds
Simplex Trading's Q3 2022 Portfolio in Review
As of Q3 2022, Simplex Trading held 11,570 positions worth $88.5B, down 6% from $94.1B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading's Q3 2022 filing shows 1,564 new, 4,281 increased, 3,851 reduced and 1,575 closed positions. Its largest new stake was Microsoft: 432,062 shares worth $101M. The largest sale was Apple, an estimated $467M.
By sector, the portfolio is most concentrated in Technology at 0.51% of assets, down from 0.84% a quarter earlier, followed by Financials and Consumer Discretionary.
- Simplex Trading's largest Q3 2022 buy was Microsoft: 432,062 shares worth $101M.
- Simplex Trading added most to NVIDIA in Q3 2022, an estimated $85.9M increase.
- Simplex Trading's biggest Q3 2022 reduction was Apple, cutting an estimated $467M.
- Simplex Trading fully exited iShares Core S&P 500 ETF in Q3 2022, selling an estimated $34.3M.
- Simplex Trading's ten largest holdings make up 38% of its $88.5B portfolio in Q3 2022.
- Simplex Trading opened 1,564 new positions and closed 1,575 in Q3 2022.
- Simplex Trading's portfolio value fell 6% quarter-over-quarter to $88.5B.
Based on Simplex Trading's 13F filing for Q3 2022, filed 4 Nov 2022.