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 | |
|---|---|---|---|---|---|---|
1401
CALL
Avis
CAR
$5.63B
| $3.81M | ﹤0.01% |
25,700
+4,000
| +18% | +$657K |
|
1402
CALL
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
$27B
| $3.81M | ﹤0.01% |
9,500
+4,400
| +86% | +$1.94M |
|
1403
Zscaler
ZS
$23B
| $3.81M | ﹤0.01% |
23,214
+16,357
| +239% | +$2.68M |
|
1404
ProShares Ultra VIX Short-Term Futures ETF
UVXY
$249M
| $3.81M | ﹤0.01% |
+1,187
| New | +$3.26M |
|
1405
SAP
SAP
$187B
| $3.81M | ﹤0.01% |
46,915
-4,114
| -8% | -$363K |
|
1406
XPeng
XPEV
$11.8B
| $3.8M | ﹤0.01% |
318,071
+316,221
| +17,093% | +$6.81M |
|
1407
CALL
Transocean
RIG
$5.92B
| $3.8M | ﹤0.01% |
1,537,600
+549,700
| +56% | +$1.76M |
|
|
1408
PUT
Transocean
RIG
$5.92B
| $3.79M | ﹤0.01% |
1,533,200
+1,022,500
| +200% | +$3.27M |
|
1409
Ulta Beauty
ULTA
$20.4B
| $3.79M | ﹤0.01% |
+9,439
| New | +$3.8M |
|
1410
Goldman Sachs
GS
$313B
| $3.79M | ﹤0.01% |
12,919
-33,522
| -72% | -$10.9M |
|
1411
PUT
monday.com
MNDY
$3.27B
| $3.79M | ﹤0.01% |
33,400
+6,200
| +23% | +$734K |
|
1412
PUT
PG&E
PCG
$47.8B
| $3.78M | ﹤0.01% |
302,500
-70,900
| -19% | -$830K |
|
1413
CALL
BlackBerry
BB
$5.01B
| $3.78M | ﹤0.01% |
804,200
+8,700
| +1% | +$52K |
|
1414
PUT
C.H. Robinson
CHRW
$22B
| $3.77M | ﹤0.01% |
39,200
-12,000
| -23% | -$1.29M |
|
1415
PUT
Jazz Pharmaceuticals
JAZZ
$15.9B
| $3.77M | ﹤0.01% |
28,300
-2,100
| -7% | -$319K |
|
1416
CALL
State Street SPDR Portfolio Europe ETF
SPEU
$712M
| $3.76M | ﹤0.01% |
122,700
-167,300
| -58% | -$5.44M |
|
1417
PUT
Starwood Property Trust
STWD
$6.12B
| $3.76M | ﹤0.01% |
206,400
+151,600
| +277% | +$3.43M |
|
1418
CALL
AerCap
AER
$23.9B
| $3.76M | ﹤0.01% |
88,800
-11,600
| -12% | -$513K |
|
1419
PUT
Global E Online
GLBE
$6.08B
| $3.74M | ﹤0.01% |
139,700
+87,600
| +168% | +$2.49M |
|
1420
CALL
KKR & Co
KKR
$89.2B
| $3.74M | ﹤0.01% |
86,900
-41,700
| -32% | -$2.11M |
|
|
XM
1421
PUT
DELISTED
Qualtrics International Inc. Class A Common Stock
XM
| $3.73M | ﹤0.01% |
366,400
+106,700
| +41% | +$1.33M |
|
|
ZEN
1422
PUT
DELISTED
ZENDESK INC
ZEN
| $3.73M | ﹤0.01% |
49,000
-172,900
| -78% | -$13.1M |
|
1423
CALL
O'Reilly Automotive
ORLY
$72.4B
| $3.73M | ﹤0.01% |
79,500
-3,000
| -4% | -$140K |
|
1424
PUT
Teleflex
TFX
$5.85B
| $3.73M | ﹤0.01% |
18,500
+14,400
| +351% | +$3.44M |
|
1425
CALL
CBRE Group
CBRE
$40.8B
| $3.73M | ﹤0.01% |
55,200
+1,000
| +2% | +$79.3K |
|
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.