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 |
CELG
Celgene Corp
CELG
|
+$31.6M |
| 2 |
Citigroup
C
|
+$19.5M |
| 3 |
AGN
Allergan plc
AGN
|
+$18.4M |
| 4 |
Baidu
BIDU
|
+$18M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$14.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$81.3M |
| 2 |
NVIDIA
NVDA
|
+$60.2M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$48.2M |
| 4 |
Apple
AAPL
|
+$48.2M |
| 5 |
Meta Platforms (Facebook)
META
|
+$31.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 11.27% |
| 2 | Technology | 10.64% |
| 3 | Healthcare | 7.06% |
| 4 | Communication Services | 6.92% |
| 5 | Industrials | 5.66% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
FISV
1351
Fiserv Inc
FISV
$26.6B
| $179K | 0.01% |
+2,740
| New | +$177K |
|
|
GTLS
1352
CALL
DELISTED
Chart Industries
GTLS
| $179K | 0.01% |
335
+232
| +225% | +$10.4K |
|
1353
CALL
Methanex
MEOH
$4.49B
| $179K | 0.01% |
538
+424
| +372% | +$22.3K |
|
1354
Penumbra
PEN
$12.5B
| $179K | 0.01% |
1,911
+1,027
| +116% | +$102K |
|
1355
CALL
Rockwell Automation
ROK
$51.3B
| $179K | 0.01% |
386
+339
| +721% | +$64.6K |
|
1356
PUT
Union Pacific
UNP
$181B
| $179K | 0.01% |
1,445
+506
| +54% | +$61K |
|
|
LFC
1357
DELISTED
China Life Insurance Company Ltd.
LFC
| $179K | 0.01% |
+11,527
| New | +$187K |
|
1358
CALL
ServiceNow
NOW
$95.1B
| $178K | 0.01% |
1,235
-630
| -34% | -$15.7K |
|
|
QIWI
1359
DELISTED
QIWI PLC
QIWI
| $178K | 0.01% |
10,324
+4,339
| +72% | +$69.4K |
|
1360
Black Hills Corp
BKH
$5.72B
| $177K | 0.01% |
2,947
+2,140
| +265% | +$133K |
|
1361
CALL
Elevance Health
ELV
$82.3B
| $177K | 0.01% |
199
+1
| +0.5% | +$213 |
|
1362
Kodak
KODK
$788M
| $177K | 0.01% |
57,167
+42,950
| +302% | +$199K |
|
|
TVTY
1363
CALL
DELISTED
Tivity Health, Inc. Common Stock
TVTY
| $177K | 0.01% |
453
+317
| +233% | +$12K |
|
|
ANDV
1364
CALL
DELISTED
Andeavor
ANDV
| $177K | 0.01% |
466
-432
| -48% | -$46.4K |
|
|
SHPG
1365
PUT
DELISTED
Shire pic
SHPG
| $177K | 0.01% |
836
+582
| +229% | +$86.3K |
|
1366
CALL
F5
FFIV
$21.9B
| $176K | 0.01% |
214
-25
| -10% | -$3.11K |
|
1367
CALL
Howmet Aerospace
HWM
$115B
| $176K | 0.01% |
734
-404
| -36% | -$7.86K |
|
|
CXO
1368
PUT
DELISTED
CONCHO RESOURCES INC.
CXO
| $176K | 0.01% |
484
+11
| +2% | +$1.53K |
|
1369
CALL
Parker-Hannifin
PH
$124B
| $175K | 0.01% |
86
| – | – |
|
|
TPC
1370
Tutor Perini Cor
TPC
$4.61B
| $175K | 0.01% |
+6,939
| New | +$185K |
|
|
EVHC
1371
PUT
DELISTED
Envision Healthcare Holdings Inc
EVHC
| $175K | 0.01% |
170
-518
| -75% | -$18.1K |
|
1372
iShares Core MSCI Emerging Markets ETF
IEMG
$152B
| $174K | 0.01% |
3,072
-12,169
| -80% | -$679K |
|
1373
CALL
Murphy USA
MUSA
$11.5B
| $174K | 0.01% |
+262
| New | +$19.8K |
|
|
SRG
1374
Seritage Growth Properties
SRG
$130M
| $174K | 0.01% |
+4,306
| New | +$180K |
|
1375
Tennant Co
TNC
$1.48B
| $174K | 0.01% |
2,401
+2,073
| +632% | +$138K |
|
Similar funds
Simplex Trading's Q4 2017 Portfolio in Review
As of Q4 2017, Simplex Trading held 7,407 positions worth $2.32B, down 5.1% from $2.45B the previous quarter. Its ten largest holdings account for 17% of the portfolio.
Simplex Trading withdrew a net $315M in Q4 2017, closing 1,460 positions and reducing 2,239 holdings. Its most notable exit was iShares 20+ Year Treasury Bond ETF, an estimated $21.1M position sold in full.
By sector, the portfolio is most concentrated in Consumer Discretionary at 11% of assets, down from 14% a quarter earlier, followed by Technology and Healthcare.
Against the trend, Simplex Trading opened a new position in Celgene Corp worth $29.2M.
- Simplex Trading's largest Q4 2017 buy was Celgene Corp: 280,194 shares worth $29.2M.
- Simplex Trading added most to Baidu in Q4 2017, an estimated $18M increase.
- Simplex Trading's biggest Q4 2017 reduction was Amazon, cutting an estimated $81.3M.
- Simplex Trading fully exited iShares 20+ Year Treasury Bond ETF in Q4 2017, selling an estimated $21.1M.
- Simplex Trading's ten largest holdings make up 17% of its $2.32B portfolio in Q4 2017.
- Simplex Trading opened 1,548 new positions and closed 1,460 in Q4 2017.
- Simplex Trading's portfolio value fell 5.1% quarter-over-quarter to $2.32B.
Based on Simplex Trading's 13F filing for Q4 2017, filed 10 Jan 2018.