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 | |
|---|---|---|---|---|---|---|
2676
CALL
Caleres
CAL
$420M
| $971K | ﹤0.01% |
40,100
-14,200
| -26% | -$376K |
|
|
AVTA
2677
CALL
DELISTED
Avantax, Inc. Common Stock
AVTA
| $968K | ﹤0.01% |
50,100
+45,100
| +902% | +$907K |
|
|
STSA
2678
CALL
DELISTED
Satsuma Pharmaceuticals, Inc. Common Stock
STSA
| $967K | ﹤0.01% |
+161,300
| New | +$915K |
|
2679
PUT
Celanese
CE
$4.87B
| $966K | ﹤0.01% |
10,700
+9,300
| +664% | +$1.02M |
|
2680
CALL
CenterPoint Energy
CNP
$28.8B
| $966K | ﹤0.01% |
34,300
+4,100
| +14% | +$128K |
|
2681
CALL
Galicia Financial Group
GGAL
$8.03B
| $966K | ﹤0.01% |
129,500
-20,100
| -13% | -$157K |
|
2682
CALL
Amplitude
AMPL
$1.15B
| $965K | ﹤0.01% |
62,400
+33,300
| +114% | +$534K |
|
2683
PUT
Bausch + Lomb
BLCO
$5.8B
| $963K | ﹤0.01% |
62,800
+900
| +1% | +$14.3K |
|
|
ABK
2684
CALL
DELISTED
Ambac Financial Group
ABK
| $961K | ﹤0.01% |
75,400
+1,200
| +2% | +$15.3K |
|
2685
CALL
Gerdau
GGB
$9.48B
| $960K | ﹤0.01% |
267,624
+34,524
| +15% | +$125K |
|
2686
TD Synnex
SNX
$19.6B
| $960K | ﹤0.01% |
11,825
+10,310
| +681% | +$985K |
|
2687
CALL
TE Connectivity
TEL
$60.2B
| $960K | ﹤0.01% |
8,700
-10,400
| -54% | -$1.29M |
|
2688
PUT
Aegon
AEG
$13.5B
| $959K | ﹤0.01% |
242,200
+240,152
| +11,726% | +$1.05M |
|
2689
CALL
GXO Logistics
GXO
$6.13B
| $957K | ﹤0.01% |
27,300
+20,500
| +301% | +$905K |
|
2690
CALL
ING
ING
$95.7B
| $957K | ﹤0.01% |
112,700
-13,200
| -10% | -$122K |
|
2691
CALL
Revolve Group
RVLV
$1.84B
| $956K | ﹤0.01% |
44,100
+9,000
| +26% | +$237K |
|
2692
Skyworks Solutions
SWKS
$9.54B
| $956K | ﹤0.01% |
11,221
-12,993
| -54% | -$1.33M |
|
2693
PUT
ABM Industries
ABM
$2.84B
| $955K | ﹤0.01% |
25,000
+22,400
| +862% | +$981K |
|
2694
PUT
Hecla Mining
HL
$10.2B
| $955K | ﹤0.01% |
242,400
+52,400
| +28% | +$213K |
|
2695
Orion
OEC
$379M
| $955K | ﹤0.01% |
71,588
+52,063
| +267% | +$846K |
|
|
SUMO
2696
CALL
DELISTED
Sumo Logic, Inc. Common Stock
SUMO
| $954K | ﹤0.01% |
127,200
+64,800
| +104% | +$517K |
|
2697
CALL
Clear Secure
YOU
$5.36B
| $953K | ﹤0.01% |
41,700
+22,600
| +118% | +$554K |
|
2698
CALL
GitLab
GTLB
$5.55B
| $952K | ﹤0.01% |
18,600
-27,900
| -60% | -$1.63M |
|
|
SFIX
2699
CALL
Stitch Fix
SFIX
$536M
| $952K | ﹤0.01% |
241,100
-26,100
| -10% | -$148K |
|
2700
CALL
Vanguard Total International Stock ETF
VXUS
$153B
| $952K | ﹤0.01% |
20,800
+13,300
| +177% | +$680K |
|
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.