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 | |
|---|---|---|---|---|---|---|
3451
Manitowoc
MTW
$524M
| $384K | ﹤0.01% |
41,933
+41,516
| +9,956% | +$379K |
|
3452
CALL
Payoneer
PAYO
$2.41B
| $384K | ﹤0.01% |
70,300
-95,900
| -58% | -$602K |
|
3453
Riskified
RSKD
$720M
| $384K | ﹤0.01% |
+83,187
| New | +$387K |
|
3454
Similarweb
SMWB
$633M
| $384K | ﹤0.01% |
59,827
+28,675
| +92% | +$164K |
|
|
FPAC
3455
CALL
DELISTED
Far Peak Acquisition Corporation
FPAC
| $384K | ﹤0.01% |
38,300
+300
| +0.8% | +$2.99K |
|
3456
Integra LifeSciences
IART
$1.59B
| $383K | ﹤0.01% |
6,844
+6,753
| +7,421% | +$344K |
|
3457
PUT
Pembina Pipeline
PBA
$29.1B
| $383K | ﹤0.01% |
11,300
-10,500
| -48% | -$352K |
|
3458
Veru
VERU
$35.5M
| $383K | ﹤0.01% |
7,262
-26,682
| -79% | -$2.2M |
|
3459
PUT
Aecom
ACM
$9.44B
| $382K | ﹤0.01% |
4,500
-10,200
| -69% | -$802K |
|
3460
Beyond Meat
BYND
$279M
| $382K | ﹤0.01% |
31,068
+30,118
| +3,170% | +$420K |
|
3461
CALL
Hess Midstream
HESM
$5.16B
| $382K | ﹤0.01% |
12,800
+10,600
| +482% | +$303K |
|
3462
PagSeguro Digital
PAGS
$2.67B
| $382K | ﹤0.01% |
43,773
+31,092
| +245% | +$365K |
|
3463
Sphere Entertainment
SPHR
$4.92B
| $382K | ﹤0.01% |
8,504
+7,966
| +1,481% | +$361K |
|
3464
Twist Bioscience
TWST
$5.43B
| $382K | ﹤0.01% |
16,048
+15,044
| +1,498% | +$436K |
|
|
EXPR
3465
CALL
DELISTED
Express, Inc.
EXPR
| $382K | ﹤0.01% |
18,770
+4,870
| +35% | +$116K |
|
|
DNB
3466
PUT
DELISTED
Dun & Bradstreet
DNB
| $381K | ﹤0.01% |
+31,100
| New | +$399K |
|
3467
Old National Bancorp
ONB
$10.3B
| $381K | ﹤0.01% |
21,212
+6,259
| +42% | +$115K |
|
3468
PUT
Planet Labs
PL
$7.26B
| $381K | ﹤0.01% |
87,700
+8,400
| +11% | +$43.5K |
|
3469
United States 12 Month Oil Fund,
USL
$44.4M
| $381K | ﹤0.01% |
10,733
-2,328
| -18% | -$81.7K |
|
3470
CALL
Hudbay
HBM
$9.67B
| $380K | ﹤0.01% |
75,100
+60,200
| +404% | +$290K |
|
3471
PUT
Vipshop
VIPS
$7.13B
| $380K | ﹤0.01% |
27,900
+9,900
| +55% | +$98.3K |
|
|
ALTU
3472
PUT
DELISTED
Altitude Acquisition Corp
ALTU
| $380K | ﹤0.01% |
38,400
+8,600
| +29% | +$85.5K |
|
3473
CALL
MDU Resources
MDU
$4.37B
| $379K | ﹤0.01% |
32,874
-24,720
| -43% | -$278K |
|
3474
State Street SPDR Bloomberg Short Term High Yield Bond ETF
SJNK
$4.88B
| $379K | ﹤0.01% |
15,668
+13,099
| +510% | +$318K |
|
|
SIX
3475
DELISTED
Six Flags Entertainment Corp.
SIX
| $379K | ﹤0.01% |
+16,313
| New | +$351K |
|
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.