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 |
Amazon
AMZN
|
+$170M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$71.3M |
| 3 |
AT&T
T
|
+$44.2M |
| 4 |
Meta Platforms (Facebook)
META
|
+$37.1M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$34.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$94.3M |
| 2 |
JPMorgan Chase
JPM
|
+$68.2M |
| 3 |
Citigroup
C
|
+$62.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$50.9M |
| 5 |
SPDR Gold Trust
GLD
|
+$46.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.38% |
| 2 | Technology | 0.35% |
| 3 | Communication Services | 0.24% |
| 4 | Healthcare | 0.2% |
| 5 | Consumer Staples | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2801
PUT
Allot
ALLT
$374M
| $716K | ﹤0.01% |
208,300
+17,600
| +9% | +$66K |
|
2802
CALL
American Water Works
AWK
$26.3B
| $716K | ﹤0.01% |
4,700
-12,000
| -72% | -$1.73M |
|
|
HBI
2803
CALL
DELISTED
Hanesbrands
HBI
| $716K | ﹤0.01% |
112,700
-58,100
| -34% | -$399K |
|
|
ETRN
2804
PUT
DELISTED
Equitrans Midstream Corporation Common Stock
ETRN
| $716K | ﹤0.01% |
106,900
-17,700
| -14% | -$137K |
|
2805
Baker Hughes
BKR
$56.8B
| $715K | ﹤0.01% |
24,220
-13,284
| -35% | -$366K |
|
|
SFIX
2806
CALL
Stitch Fix
SFIX
$478M
| $715K | ﹤0.01% |
230,100
-11,000
| -5% | -$41.1K |
|
|
AIV
2807
CALL
Aimco
AIV
$380M
| $714K | ﹤0.01% |
100,400
+70,900
| +240% | +$540K |
|
2808
CALL
iShares 0-5 Year Investment Grade Corporate Bond ETF
SLQD
$2.36B
| $714K | ﹤0.01% |
16,300
+11,700
| +254% | +$557K |
|
2809
CALL
Travel + Leisure Co
TNL
$4.54B
| $713K | ﹤0.01% |
19,600
-1,400
| -7% | -$52.5K |
|
|
NBIS
2810
PUT
Nebius Group N.V.
NBIS
$47.7B
| $713K | ﹤0.01% |
15,300
| – | – |
|
2811
Dick's Sporting Goods
DKS
$18.4B
| $712K | ﹤0.01% |
+5,927
| New | +$668K |
|
|
SAVE
2812
PUT
DELISTED
Spirit Airlines, Inc.
SAVE
| $712K | ﹤0.01% |
36,600
-58,700
| -62% | -$1.2M |
|
2813
CALL
Pliant Therapeutics
PLRX
$67.5M
| $711K | ﹤0.01% |
36,800
+30,800
| +513% | +$644K |
|
|
NOTV
2814
PUT
DELISTED
Inotiv
NOTV
| $710K | ﹤0.01% |
143,800
+143,200
| +23,867% | +$1.78M |
|
2815
Under Armour Class C
UA
$2.92B
| $709K | ﹤0.01% |
79,527
+28,117
| +55% | +$214K |
|
2816
Cullen/Frost Bankers
CFR
$10.3B
| $708K | ﹤0.01% |
+5,302
| New | +$754K |
|
2817
CALL
SIGA Technologies
SIGA
$223M
| $708K | ﹤0.01% |
96,200
-65,100
| -40% | -$571K |
|
2818
PUT
Beam Therapeutics
BEAM
$2.58B
| $707K | ﹤0.01% |
18,100
+6,400
| +55% | +$287K |
|
|
SYRS
2819
CALL
DELISTED
Syros Pharmaceuticals, Inc. Common Stock
SYRS
| $707K | ﹤0.01% |
197,100
-8,000
| -4% | -$34.7K |
|
2820
CALL
Commercial Metals
CMC
$7.63B
| $705K | ﹤0.01% |
14,600
-2,100
| -13% | -$96.3K |
|
2821
Darden Restaurants
DRI
$22.5B
| $705K | ﹤0.01% |
+5,098
| New | +$711K |
|
2822
PUT
StoneCo
STNE
$2.62B
| $705K | ﹤0.01% |
74,700
-58,200
| -44% | -$610K |
|
|
RUTH
2823
CALL
DELISTED
Ruth's Hospitality Group, Inc.
RUTH
| $705K | ﹤0.01% |
45,600
+2,900
| +7% | +$50.9K |
|
2824
CALL
Arvinas
ARVN
$518M
| $704K | ﹤0.01% |
20,600
+12,000
| +140% | +$505K |
|
2825
Rogers Corp
ROG
$2.33B
| $704K | ﹤0.01% |
+5,900
| New | +$916K |
|
Similar funds
Simplex Trading's Q4 2022 Portfolio in Review
As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q4 2022 filing shows 1,219 new, 3,365 increased, 4,370 reduced and 1,942 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.38% of assets, up from 0.3% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
- Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
- Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
- Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
- Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
- Simplex Trading opened 1,219 new positions and closed 1,942 in Q4 2022.
- Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.
Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.