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 | |
|---|---|---|---|---|---|---|
2551
PUT
FuboTV Inc
FUBO
$245M
| $911K | ﹤0.01% |
43,650
-21,892
| -33% | -$802K |
|
|
XIFR
2552
CALL
XPLR Infrastructure LP
XIFR
$1.18B
| $911K | ﹤0.01% |
13,000
+2,800
| +27% | +$210K |
|
2553
PUT
Acuity Brands
AYI
$9.88B
| $910K | ﹤0.01% |
5,500
+800
| +17% | +$142K |
|
2554
PUT
Annexon
ANNX
$855M
| $909K | ﹤0.01% |
175,900
| – | – |
|
|
ALTR
2555
CALL
DELISTED
Altair Engineering Inc
ALTR
| $909K | ﹤0.01% |
20,000
-3,800
| -16% | -$178K |
|
2556
PUT
Teradyne
TER
$54.8B
| $908K | ﹤0.01% |
10,400
-10,900
| -51% | -$934K |
|
2557
New Fortress Energy
NFE
$101M
| $907K | ﹤0.01% |
21,393
+16,782
| +364% | +$811K |
|
2558
PUT
PPG Industries
PPG
$25.9B
| $905K | ﹤0.01% |
7,200
-1,400
| -16% | -$171K |
|
2559
CALL
Alkermes
ALKS
$8.82B
| $904K | ﹤0.01% |
34,600
+24,800
| +253% | +$593K |
|
|
VRN
2560
PUT
DELISTED
Veren
VRN
| $904K | ﹤0.01% |
126,500
-100,300
| -44% | -$744K |
|
2561
Xcel Energy
XEL
$51B
| $901K | ﹤0.01% |
12,858
-16,084
| -56% | -$1.07M |
|
2562
CALL
Otis Worldwide
OTIS
$27.4B
| $900K | ﹤0.01% |
11,500
-29,700
| -72% | -$2.19M |
|
2563
CALL
Western Alliance Bancorporation
WAL
$9.07B
| $899K | ﹤0.01% |
15,100
-22,200
| -60% | -$1.44M |
|
2564
lululemon athletica
LULU
$13B
| $898K | ﹤0.01% |
2,805
-17,205
| -86% | -$5.66M |
|
2565
CALL
Energy Fuels
UUUU
$2.82B
| $896K | ﹤0.01% |
144,300
-261,600
| -64% | -$1.73M |
|
2566
Amylyx Pharmaceuticals
AMLX
$2.05B
| $895K | ﹤0.01% |
24,248
-92,356
| -79% | -$3.28M |
|
2567
CALL
MBIA
MBI
$288M
| $895K | ﹤0.01% |
69,700
-46,100
| -40% | -$527K |
|
2568
CALL
Franklin Resources
BEN
$16.9B
| $894K | ﹤0.01% |
33,900
-1,500
| -4% | -$37.3K |
|
|
DCP
2569
CALL
DELISTED
DCP Midstream, LP
DCP
| $892K | ﹤0.01% |
23,000
-9,500
| -29% | -$368K |
|
|
ISEE
2570
DELISTED
IVERIC bio, Inc. Common Stock
ISEE
| $891K | ﹤0.01% |
41,635
+18,712
| +82% | +$399K |
|
|
ETNB
2571
DELISTED
89bio
ETNB
| $887K | ﹤0.01% |
+69,683
| New | +$627K |
|
2572
CALL
Uranium Energy
UEC
$4.71B
| $887K | ﹤0.01% |
228,700
-80,900
| -26% | -$307K |
|
2573
PUT
YPF
YPF
$20.2B
| $885K | ﹤0.01% |
96,400
-3,700
| -4% | -$28.5K |
|
|
ARCH
2574
PUT
DELISTED
Arch Resources, Inc.
ARCH
| $885K | ﹤0.01% |
6,200
-33,800
| -85% | -$4.94M |
|
2575
PUT
Clearfield
CLFD
$421M
| $884K | ﹤0.01% |
9,400
+8,500
| +944% | +$896K |
|
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.